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23 Cards in this Set
- Front
- Back
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dialysis
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filtration of the blood to rid it of waste
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facilitated diffusion
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transport proteins to facilitate diffusion
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active transport
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pumping of molecules by cells using energy
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pinocytosis
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absorption of extra cellular fluid
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phagocytosis
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envelopment of dead cells (digested)
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exocytosis
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reverse pinocytosis
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carrier molecule
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moves electrons through the transport chain
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sodium potassium pump
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moves sodium ions out of cell and potassium ions in
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osmotic pressure
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pressure needed to prevent inward flow of water
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filtration
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gravity or pressure moves solvents through membranes
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osmosis
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movement of water through semi-permeable membrane
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diffusion
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spread of particles from high to low concentration
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telophase
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migration of chromosomes to cells is complete
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anaphase
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the phase wherein chromosomes move toward opposite ends of the nuclear spindle
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metaphase
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the stage wherein chromosomes are aligned at teh cell center prior to division
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prophase
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the first stage of mitosis wherein chromastatin, consisting of DNA strands, condenses.
nucleolus & nuclear envelope disappear spindle fibers form |
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interphase
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the phase where a cell is 95% of the time, performing its duties
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mitosis
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process of cell division of eukaryotic cells
1 cell divides into 2 new cells, both identical. each have nucleus & DNA- "daughter cells" 5 stages: interphase, prophase, metaphase, anaphase, & telephase |
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eukaryotes
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cells of higher organisms, like plants and animals
contain nucleus subdivided into subcellular compartments called organelles |
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prokaryote organisms
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formed of only 1 cell
no nucleus does not contain genetic material ex: bacteria |
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reductional division
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cell division in which the # of chromosomes in daughter cells is less than in the original cell
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synapsis
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in meiosis, the corresponding maternal and paternal chromosomes come together
23 pairs of chromosomes each member of each pair has 2 chromatids |
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tetrad
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in meiosis, a matched set of 4 chromatids
as tetrads come together, some crossing over can occur, increasing genetic variation |
